import java.io.File;
import java.io.IOException;

public class Test {
    public static void main(String[] args) throws IOException {
        File file = new File("E:\\chenming\\step-two\\step02-20230320\\day18流file\\aaa");
        file.mkdir();
        File file1 = new File("E:\\chenming\\step-two\\step02-20230320\\day18流file\\aaa\\a.txt");
        file1.createNewFile();
    }
}
